Improvement in roasting sulphurets and other ores



A.' F.w. PARTZ.

Roasting Sulphurets and other Ores.

No. 43.129. Patmed 1.1.1814, 1864.

l NITED STATES- ArnNr erica.

AUGUST F. IV. HARTZ, OF WURTSBOROUGH, NEV YORK.

IMPROVEMENT IN ROASTING SULPHURETS AND OTHER CRES.

Specification forming part of Letters Patent No. 43,129, dated June 14, 1864.

To aZZ whom t may concern:

Beit known that I, AUGUsT F. W. PARTZ, of Wurtsborough, in the county of Sullivan and State of New York, have invented and made certain Improvements in the Roasting of Sulphurets and other Ores and Minerals; and-I do hereby declare the following to bea full, clear, and exact description of my said invention, reference being had to the annexed drawings, making apart of this specication, wherein- Figure l represents avertical section of my improved apparatus. Fig. 2 is a ground plan, and Fig. 3 a front elevation of the same.

VSimilar marks of reference denote the same parts.

Sulphuret ores in a more or less finely-dilvided state have heretofore been desulphurized and oxidized by the joint application of heat and air in a regulated manner, with the aid of various apparatus andcontrivances.

My invention relates to the use for this purpose of a vertical or nearly vertical shaft, bearing resemblance to a chimney, through which the ore is allowed to fall, while at the same time heat is caused to ascend, together with a l volume of air sufficient to burn during the descent of the ore the sulphur with which it is combined, and which escapes in a gaseous form, and also to oxidize the metalliferous portion of the ore, which falls to the base of the shaft, ready forsubsequent metallurgical treatment.

In order to check the ore in its descent through the shaft and insure its becoming sufi ciently heated, I provide a series of alternating inclines. I also make use of a jet of steam, introduced near the bottom ofthe shaft, to promote the desulphurizing operation.

In the drawings, a is a furnace of any suitable construction, by means of which the shaft b can be heated to the necessary temperature.

l is a platform sustaining the feeding-slide e, from which the ore is supplied, through the orifice o, into the shaft b, in the regulated quantity required, and passes upon theincline e, whence it falls upon the incline e', and so on from one to the other until it arrives at the incline e5, whence it falls into the chamber or receptacle l1.. The necessary air may be ad mitted tothe shaft either through the furnace, or also through the air door or slide g.

v5 is a steam-pipe, through which the re-I quired quantity of steam is introduced, and

the air introduced at g also aids in regulating the temperature of the shaft.

Between the inclines I provide holes in the shaft, with Stoppers f f, by the removal of which the operation may be observechor the inclines scraped or cleaned in case of the ore While by the process above set forth theso-called baser metals are oxidized, the particles of gold. and silver contained in auriferous and fargentiferous ores will be partially fused and fall down in a granular metallic state, which greatly facilitates their collection by amalgamation. If the sulphurets are not associated with too large a proportion of veinstone or earthy matter, the heat produced by the combustion of the sulphur will be sufficient to keep the apparatus in operation without further supply of heat from the furnace after the shaft has once acquired the necessary temperature.

Ores containing phosphorus, arsenic, and other volatile elements may be treated essentially in the same manner and with the same effect as sulphurets.

In order to prevent portions of the ore from escaping with the gases into the atmosphere, or to make the gases themselves useful by arresting and converting them into articles of commerce or otherwise, the upper end of the shaft may-be made to communicate with collecting or condensing chambers similar to those generally employed for such purposes,| or especially designed in accordance with the particular end in view. By my improvement it will be seen the separate particles of the ore are presented to the action of heat and air in a much more thorough manner than by the methods of roasting heretofore in use,while it presents material advantages over other devices intended to accomplish the same result, on account of the fact that no motive power is required in the operation, and crushed ores or tailings may be workedwithout the aid of machinery for effecting their intimate contact with heat and air.

What I claim, and desire to secure by Letters Patent, isy 1. An upright shaft or chamber through which heat and air are passed, in combination mitting a supply of air for regulating the tem- Witha series of nclnes applied in such shaft perature, as set forth.

to check the descent of the ores, as set Jforth. In witness whereof I have hereunto set my 2. A shaft in which the heat and air ascend signature this 4th day of March, A. D. 1864. as the ores descend, in combination with a re- A F XV PARTZ ceivng-chamber, substantially as specified. l.

3. Avertical shaft or chamber in which the XVitnesses: heat and air ascend as the ores descend, in LEMUEL W. SERRELL, combination with a door or damper for ad- TI-Ios. GEO. HAROLD. 

